Question

构建我的代码然后在Alamofire.request(request as! URLRequestConvertible).responseJSON()崩溃。请提示如何修复此崩溃

let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
let request = NSMutableURLRequest(url:url! as URL)
request.httpMethod = "GET"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")

Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in

       switch response.result
       {
          case .success(let data):                
             print(" i got my Data Yup",data)          
          case .failure(let error):
             print(error)                                
        }
    }

Answer 1

在Swift 3中，您所要做的就是将NSMutableURLRequest更改为URLRequest，它将起作用。不需要施放。另外，设置var以便它可以快速变化。 :)谢谢，马库斯发表评论。

Answer 2

将let request = NSMutableURLRequest(url:url! as URL)更改为 var request = URLRequest(url: NSURL(string: url)! as URL) 你的代码看起来像这样： -

    let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
    var request = URLRequest(url: NSURL(string: url)! as URL)
    request.httpMethod = "GET"
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")

    Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in

           switch response.result
           {
              case .success(let data):                
                 print(" i got my Data Yup",data)          
              case .failure(let error):
                 print(error)                                
            }
        }

Answer 3

您还可以尝试使用以下语法来处理请求方法：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
        "classpath:kafka-outbound-context.xml"
        })
public class ProducerTest{

    @Autowired
    @Qualifier("inputToKafka")
    MessageChannel channel;

    @Test
    public void test_send_message() {

        channel.send(MessageBuilder.withPayload("Test Message")
                .setHeader(KafkaHeaders.TOPIC, "test").build());

    }

}

无法将'NSMutableURLRequest'（0x11beb7040）类型的值转换为'Alamofire.URLRequestConvertible'（0x11beb9040）

3 个答案: